docs: def _handle_hr(self):
          """Handle a wiki-style horizontal rule (``----``) in the string."""
          length = 4
          self._head += 3
          while self._read(1) == "-":
              length += 1
              self._head += 1
          self._emit(tokens.TagOpenOpen(wiki_markup="-" * length))
          self._emit_text("hr")
          self._emit(tokens.TagCloseSelfclose())